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doi:10.1016/S0140-3664(96)01083-3 
Copyright © 1996 Published by Elsevier Science B.V.
Research
Adaptive bandwidth estimation and allocation for DQDB MAN interworking with B-ISDN
Received 2 February 1994;
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Abstract
The main challenge for internetting LAN/MAN across B-ISDN comes from the fact that B-ISDN is connection-oriented but LANs and MANs run connectionless protocols. The critical issue is for the gateway to estimate the incoming traffic bit rate and negotiate with the B-ISDN for bandwidth allocation. In this paper we propose an adaptive estimation method for connectionless DQDB MAN interworking with B-ISDN. Due to the inherent nature of DQDB, the time window of bandwidth estimation can be adjusted dynamically. This results in a smaller fluctuation of required bandwidth estimation, so the gateway doesn't need to renegotiate frequently. In addition, based on the knowledge of bandwidth required, we propose a strategy for bandwidth allocation. Performance results are compared for the following schemes: adaptive time window, fixed time window, fixed cell window and a buffer threshold scheme. It shows that the proposed scheme performs better than other such schemes.
Author Keywords: Bandwidth estimation; Internetworking; Adaptive estimation; B-ISDN
